“Holy water might be mostly bullshit, I mean if Christ blessed it? – okay. But some random Catholic priest? – no.” – Dr. Freckles
To bless water you must find a martyr (that’s not possible), or a Saint who is simultaneously alive at the same time you are … how would you know?
An angel might be able to bless water for God.
And God could do it … but how often does THAT burning-bush stuff happen?